//! macOS-specific window management

use super::PlatformWindowManager;
use crate::webview::lifecycle::{CloseReason, LifecycleManager};
use parking_lot::Mutex;
use scopeguard::defer;
use std::sync::Arc;
use tracing::{info, trace, warn};

/// macOS-specific window manager
pub struct MacOSWindowManager {
    ns_window: *mut std::ffi::c_void,
    lifecycle: Arc<Mutex<Option<Arc<LifecycleManager>>>>,
}

impl MacOSWindowManager {
    /// Create a new macOS window manager
    pub fn new(ns_window: *mut std::ffi::c_void) -> Self {
        info!("[MacOSWindowManager] Created for NSWindow: {:?}", ns_window);

        Self {
            ns_window,
            lifecycle: Arc::new(Mutex::new(None)),
        }
    }

    /// Process macOS events
    fn process_macos_events(&self) -> bool {
        defer! {
            trace!("[MacOSWindowManager] Event processing completed");
        }

        // Check lifecycle state
        if let Some(lifecycle) = self.lifecycle.lock().as_ref() {
            if let Some(reason) = lifecycle.check_close_requested() {
                info!("[MacOSWindowManager] Close already requested: {:?}", reason);
                return true;
            }
        }

        // TODO: Implement macOS-specific event processing
        // This would involve:
        // 1. Checking NSWindow state
        // 2. Processing NSApplication events
        // 3. Detecting window close notifications

        false
    }
}

impl PlatformWindowManager for MacOSWindowManager {
    fn process_events(&self) -> bool {
        self.process_macos_events()
    }

    fn setup_close_handlers(&self, lifecycle: Arc<LifecycleManager>) {
        *self.lifecycle.lock() = Some(lifecycle.clone());

        info!("[MacOSWindowManager] Close handlers configured");

        // TODO: Register NSWindow delegate for close notifications
        // This would involve:
        // 1. Creating a custom NSWindowDelegate
        // 2. Implementing windowShouldClose: method
        // 3. Calling lifecycle.request_close() when close is requested
    }

    fn cleanup(&self) {
        defer! {
            info!("[MacOSWindowManager] Cleanup completed");
        }

        info!(
            "[MacOSWindowManager] Starting cleanup for NSWindow: {:?}",
            self.ns_window
        );

        // Clear lifecycle reference
        *self.lifecycle.lock() = None;

        // TODO: Implement macOS-specific cleanup
        // This would involve:
        // 1. Removing NSWindow delegate
        // 2. Releasing any Objective-C objects
        // 3. Cleaning up notification observers
    }

    fn is_window_valid(&self) -> bool {
        // TODO: Implement NSWindow validity check
        // This would involve checking if the NSWindow is still alive
        // For now, assume valid if pointer is not null

        let is_valid = !self.ns_window.is_null();

        if !is_valid {
            warn!(
                "[MacOSWindowManager] Window is no longer valid: {:?}",
                self.ns_window
            );
        }

        is_valid
    }
}

// Safety: NSWindow pointers can be safely sent between threads
// as long as we only access them on the main thread
unsafe impl Send for MacOSWindowManager {}
unsafe impl Sync for MacOSWindowManager {}
